Consider two slides, both of the same height. One is long and the other is short. From which slide will the children have a greater final speed when they slide off? Assume that there is no friction acting.

Explanation:

Sine the plane is horizontal , effect of gravity on horizontal motion will be nil.

Since no friction is acting on it , no horizontal force is acting on it. Since no vertical ,no horizontal force is acting on it , it will have uniform motion ,ie its velocity will remain unchanged during its motion , no matter how long the path is.

So , velocity along the path will remain unchanged.

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explanation: